WordReference English-Portuguese Dictionary © 2018:
half preppreposition: Relates noun or pronoun to another element of sentence--for example, "a picture of John," "She walked from my house to yours."
| (thirty minutes after (the hour)) (hora)||três e meia sf|
| ||School usually finishes at half past three, but today we finished at half two!|
|half past adjadjective: Describes a noun or pronoun--for example, "a tall girl," "an interesting book," "a big house." || informal (thirty minutes after (the hour)) (informal, complemento de hora)||e meia expres|
|Nota: A expressão é usada para representar meia hora passada de qualquer hora.|
| ||I finish work at 5, so I'll drop by to pick you up at about half past.|